“Slow” wave of zero-sound in degenerate Fermi gas

• Authors: Yuri Poluektov , Volodymyr Savchenko
• Languages of publication: EN

Abstracts

EN

The dynamic Hartree-Fock theory with point-like interaction is used to calculate the speed of sound and damping factor of a zero-sound wave propagating in a degenerate Fermi gas. This wave propagates slower than Fermi velocity. It is shown, that if the interaction is weak and density is small, then the damping of such a wave can be small. A possibility of discovering such waves in ultracold Fermi gases is discussed.

Keywords

EN

Fermi gas; zero-sound; damping

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2014
• Volume: 12
• Issue: 9
• Pages: 660-665

Dates

published

1 - 9 - 2014

online

31 - 7 - 2014

Contributors

author

Yuri Poluektov

• Akhiezer Institute for Theoretical Physics, NSC “Kharkov Institute of Physics and Technology”, 1, Akademicheskaya Str., Kharkov UA, 61108, Ukraine

author

Volodymyr Savchenko

• Akhiezer Institute for Theoretical Physics, NSC “Kharkov Institute of Physics and Technology”, 1, Akademicheskaya Str., Kharkov UA, 61108, Ukraine

References

• [1] Yu. L. Klimontovich, V. P. Silin, Zh. Eksp. Teor. Fiz. 23, 151 (1952) (in Russian)
• [2] V. P. Silin, Zh. Eksp. Teor. Fiz. 23, 641 (1952) (in Russian)
• [3] V. P. Silin, Zh. Eksp. Teor. Fiz. 27, 259 (1952) (in Russian)
• [4] L. D. Landau, Zh. Eksp. Teor. Fiz. 32, 59 (1957) (in Russian)
• [5] L. D. Landau, Zh. Eksp. Teor. Fiz. 16, 547 (1947) (in Russian)
• [6] D. Pines, P. Nozieres, The theory of quantum fluids (W. A. Benjamin, New York, 1966)
• [7] P. M. Platzman, P. A. Wolff, Waves and interactions in solid state plasmas (Academic Press, New York, 1973)
• [8] Yu. V. Slusarenko, Low Temp. Phys. 24, 219 (1998) http://dx.doi.org/10.1063/1.593588[Crossref]
• [9] B. DeMarco, D. S. Jin, Science 285, 1703 (1999) http://dx.doi.org/10.1126/science.285.5434.1703[Crossref]
• [10] A. Truscott, K. Strecker, W. McAlexander, G. Partridge and R. G. Hulet, Science 291, 2570 (2001) http://dx.doi.org/10.1126/science.1059318[Crossref]
• [11] F. Schreck et al., Phys. Rev. Lett. 87, 080403 (2001) http://dx.doi.org/10.1103/PhysRevLett.87.080403[Crossref]
• [12] S. R. Granade, M. E. Gehm, K. M. O’Hara, and J. E. Thomas, Phys. Rev. Lett. 88, 120405 (2002) http://dx.doi.org/10.1103/PhysRevLett.88.120405[Crossref]
• [13] N. N. Bogolubov, Izv. AN SSSR, ser. fiz. 11, 77 (1947) (in Russian)
• [14] A. V. Turlapov, JETP Lett. 95, 104 (2012) http://dx.doi.org/10.1134/S0021364012020105[Crossref]

Identifiers

DOI

10.2478/s11534-014-0491-6